IPC: Add MojoHandleAttachment

ipc/ipc_channel_nacl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ipc/ipc_channel_nacl.h"
 
 #include <errno.h>
 #include <stddef.h>
 #include <sys/types.h>
 
@@ skipping 182 matching lines @@
   reader_thread_->Join();
   close(pipe_);
   pipe_ = -1;
   reader_thread_runner_.reset();
   reader_thread_.reset();
   read_queue_.clear();
   output_queue_.clear();
 }
 
 bool ChannelNacl::Send(Message* message) {
+  DCHECK(!message->HasAttachments());
   DVLOG(2) << "sending message @" << message << " on channel @" << this
            << " with type " << message->type();
   scoped_ptr<Message> message_ptr(message);
 
 #ifdef IPC_MESSAGE_LOG_ENABLED
   Logging::GetInstance()->OnSendMessage(message_ptr.get(), "");
 #endif  // IPC_MESSAGE_LOG_ENABLED
 
   message->TraceMessageBegin();
   output_queue_.push_back(linked_ptr<Message>(message_ptr.release()));
@@ skipping 158 matching lines @@
 // Channel's methods
 
 // static
 scoped_ptr<Channel> Channel::Create(
     const IPC::ChannelHandle &channel_handle, Mode mode, Listener* listener) {
   return scoped_ptr<Channel>(
       new ChannelNacl(channel_handle, mode, listener));
 }
 
 }  // namespace IPC